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authorMagnus Damm <damm@opensource.se>2010-12-14 16:56:55 +0900
committerPaul Mundt <lethal@linux-sh.org>2010-12-14 18:15:44 +0900
commit1c51ed4fb9f11fa1e0873aa2d5b28f42a85ac299 (patch)
tree258c5de6db68146a86fc27ae1dc2b8fed2dc40e3 /arch/arm/mach-shmobile/headsmp.S
parent09dd7ded60019d6a4fd2ae20a08c4ad2bc3ed3e9 (diff)
ARM: mach-shmobile: SMP base support
Add SMP base support for R-Mobile / SH-Mobile processors. This patch contains all base code to support CONFIG_SMP regardless of ARCH_SHMOBILE processor type. Both local timer and CPU hotplug are supported, but no processor specific code is included. At this point only the default behavior is in place, so a single core will always be used even though CONFIG_SMP is enabled on multicore systems. The SMP Kconfig entry for arch/arm/Kconfig is excluded from this patch to simplify merging. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/arm/mach-shmobile/headsmp.S')
-rw-r--r--arch/arm/mach-shmobile/headsmp.S26
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/headsmp.S b/arch/arm/mach-shmobile/headsmp.S
new file mode 100644
index 000000000000..a5c5af1e6bce
--- /dev/null
+++ b/arch/arm/mach-shmobile/headsmp.S
@@ -0,0 +1,26 @@
+/*
+ * SMP support for R-Mobile / SH-Mobile
+ *
+ * Copyright (C) 2010 Magnus Damm
+ * Copyright (C) 2010 Takashi Yoshii
+ *
+ * Based on vexpress, Copyright (c) 2003 ARM Limited, All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/linkage.h>
+#include <linux/init.h>
+
+ __INIT
+
+/*
+ * Reset vector for secondary CPUs.
+ * This will be mapped at address 0 by SBAR register.
+ * We need _long_ jump to the physical address.
+ */
+ .align 12
+ENTRY(shmobile_secondary_vector)
+ ldr pc, 1f
+1: .long secondary_startup - CONFIG_PAGE_OFFSET + CONFIG_MEMORY_START